1 files changed, 27 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/InteropServices/UnmanagedFunctionPointerAttribute.cs b/src/mscorlib/shared/System/Runtime/InteropServices/UnmanagedFunctionPointerAttribute.cs
new file mode 100644
index 0000000000..2d69c95afe
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/InteropServices/UnmanagedFunctionPointerAttribute.cs
@@ -0,0 +1,27 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Delegate, AllowMultiple = false, Inherited = false)]
+    public sealed class UnmanagedFunctionPointerAttribute : Attribute
+    {
+        public bool BestFitMapping;
+        public bool SetLastError;
+        public bool ThrowOnUnmappableChar;
+        public CharSet CharSet;
+
+        public UnmanagedFunctionPointerAttribute()
+        {
+            CallingConvention = CallingConvention.Winapi;
+        }
+
+        public UnmanagedFunctionPointerAttribute(CallingConvention callingConvention)
+        {
+            CallingConvention = callingConvention;
+        }
+
+        public CallingConvention CallingConvention { get; }
+    }
+}